Telephone annunciator and jack.



`H. TIDEMAN.

TELEPHONE ANNUNGIATOR A ND JACK.

APPLIOATION IILBD JULY 6., 1907.

Patented Nov. 24, 1908.

f2.2. f77@y UNITED STATES HENRY TIDEMAN, OF MENOMINEE, MICHIGAN.

TELEPHONE ANNUNCIATOR AND JACK.

Application filed July 6, 1907.

T 0 all whom 'it may concern.:

Be it known that I, HENRY TiDnMAN, a citizen of the United States ofAmerica, and a resident of Menominee, county of lWIenominee, State ofMichigan, have invented a new and useful Improvement in a T elephoneAnnunciator and J ack, of which the following is a specification.

M y invention pertains to switch board drops and has as its object theprovision of a readily removable armature and helix for such a drop.

I provide an armature hung on journals, one of the journals beingattached to the armature by screw threads and having means whereby itmay be withdrawn. The journal bearings in which these journals turu areslotted, and by withdrawing the movable journal, the armature may beremoved from the drop. I further provide simple connective means betweenthe drop terminals and jack terminals.

In the drawings, Figure 1 shows side elevation of my combined drop andjack, Fig. 2 shows rear elevation, on broken line 3 of Fig. 2, Fig. etshows section through the journal of the armature, Fig. 5 shows samewith armature in process of removal, and Fig. 6 shows armature andjournal boxes in perspective, separated.

On the drop shell 10, I mount the journal plate 11 which sustains thearmature 1Q. 'hie armature 12 has a transverse pin projecting as ajournal bearing at 13, and has a threaded stud at li, the threaded studbeing provided with a bushing or washer at 1l. T he ournal 15 hasshoulder 16 and knurl 1T and has internal threads to screw upon thethreaded stud 14. The armature 12, with the journal 15 withdrawn, may beinserted in Ajournal plate 11 through the slots 1G, 16', butwhen the'journal 15 is screwed into place, shown in Fig. et, the armature maynot be removed. The journal plate 1.1 is secured to the shell 10 byscrews 18, passing through slots 19, whereby the adjustment of thearmature to the core 20 may be obtained, and fixed by locking the screws18, after Specification of Letters Patent.

Fig. 3 shows section I Patented Nov. 24, 1908.

Serial No. 382,425.

which the adjustment will not be disturbed by removing and replacing thearmature 12.

wWithin the shell 10, I providela fixed core Q0 upon which mounts ahelix in the removable spool 2l. Upon the head of the spool 21 areconducting studs 22, 23, and upon the switch springs would be connectedto the helix are similar conducting studs 24, 25. Conducting links QG,QT connect the switch spring studs and helix studs as shown. Thearmature 12 is perforated for clearance of the studs Q2, 2.3. Forremoval of the helix from the drop, the screws of the four studs areloosened, the links are swung outward, as shown at 2(3, and the armaturemay be removed as above described, permitting the removal and replacingof helix, after which the armature and links are replaced and theassembly of the drop is completed and in its original adjustinent.

Having I claim as new and desire to secure States Letters Patent is:

l. In a switchboard drop, an armature having a journal shaft integraltherewith: slotted journal bearings for said journal shaft, and a sleevefor said journal shaft, said sleeve being of greater diameter than thewidth of the slot of the journal bearing, and being attachable aftersaid journal shaft is within said journal bearing, substantially asdescribed.

2. In a switchboard drop, a slotted journal bearing; an armature havinga threaded journal shaft smaller than the journal bearing; and athreaded sleeve for said shaft and having a journal bearing surface,said sleeve being removable from its position to permit removal of saidshaft from said bearing, substantially as described.

j Signed by me at hlenominee, county of jh/Ienoininee and State ofMichigan, in the l thus described my invention, what by United presenceof two witnesses.

HENRY TIDEMAN.

` llitnesses:

LEOPOLD JACKMAN, F. J. DONOVAN.

which normally.

